1: (1 3 15)

(0 19 18)(1 9 3 7 5)(2 12 4)(6 11 8)(10 16 13)(14 20 17)(15)

2: (3 7 9)

(0 19 18)(1 9 5)(2 12 4)(3)(6 11 8)(7)(10 16 13)(14 20 17)(15)

3: (6 11 8)

(0 19 18)(1 9 5)(2 12 4)(3)(6)(7)(8)(10 16 13)(11)(14 20 17)(15)

4: (1 9 5)

(0 19 18)(1)(2 12 4)(3)(5)(6)(7)(8)(9)(10 16 13)(11)(14 20 17)(15)